Check that the audio chip is enabled in the BIOS. You'll need to interrupt the machine when you power it on. Usually a case of pressing F1, F2 or DEL key before windows starts. It should show on screen which key you need to press.
Look for the option to enable/disable audio. You could also...
Try installing the AC '97 drivers from Realtek:
http://www.realtek.com.tw/downloads/downloadsCheck.aspx?Langid=1&PNid=23&PFid=23&Level=4&Conn=3&DownTypeID=3&GetDown=false
These devices are designed to be used in pairs (one at each end of a cable). Two pairs in the cable are presented to each socket. This means that any devices you plug in will be limited to a 100Mbit connection. A 1Gbit connection requires all four pairs.
These devices do work if used as...
This feature is called 'Wifi Protected Setup' or WPS for short. It has been found to be insecure. You can disable it on some routers so I suggest you do so if possible.
This article explains the poor design of this 'feature'...
This is a common scam. The caller claims to be from Microsoft (who don't contact end users offering technical support!). They try to convince you that your PC has a problem of some kind. They will then take control of your PC (this is where team viewer comes in, they need your co-operation at...
You could try disabling your antivirus software before starting the backup job.
It may be something running in the background under your user account, so you could also try starting the backup job and then logging off.
It could be that IE is configured to obtain its connection settings automatically. Open IE, go to Tools, Internet Options, Connections tab, LAN settings. Make sure all tick boxes are unticked.